3D pen



FIG. 1 is a front elevational view of a 3D pen showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof, and

FIG. 7 is a front perspective view thereof.

FIG. 8 is a front perspective view of the docking portion thereof, shown without the pen for convenience; and,

FIG. 9 is a front perspective view of the pen thereof, shown without the docking portion for convenience.

The broken lines of FIG. 6 depict environment that forms no part of the claimed design. 

CLAIM The ornamental design for a 3D pen, as shown and described. 